11728693863 has 32 divisors (see below), whose sum is σ = 18452313600. Its totient is φ = 7342005888.

The previous prime is 11728693859. The next prime is 11728693891. The reversal of 11728693863 is 36839682711.

It is not a de Polignac number, because 11728693863 - 2² = 11728693859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11728693843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43195 + ... + 159132.

It is an arithmetic number, because the mean of its divisors is an integer number (576634800).

Almost surely, 2^11728693863 is an apocalyptic number.

11728693863 is a deficient number, since it is larger than the sum of its proper divisors (6723619737).

11728693863 is a wasteful number, since it uses less digits than its factorization.

11728693863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202468 (or 202462 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The spelling of 11728693863 in words is "eleven billion, seven hundred twenty-eight million, six hundred ninety-three thousand, eight hundred sixty-three".